Can I actually make progress with Indonesian in just 20 minutes a day?

I’m a busy professional and I really want to learn Indonesian before my trip to Bali next year. I’m tired of gamified apps that don't help me actually speak. I’m looking for a way to maximize my 20-minute daily window—should I focus entirely on high-frequency verb stems, or should I be doing active output? I’ve heard of people using Chickytutor.com for quick, targeted feedback, but is that effective if I only have a snack-sized amount of time?